What Are 3PE Anti-corrosion Coating Steel Pipes

Polyethylene three layer anti-corrosion coating,know as 3PE coating,is the world advanced anti-corrosion technology.3PE coating combines the excellent porperties of epoxy coating and extrusion coating of polyethylene in two.The interface properties of epoxy coatings and chemical resistance,the mechanical protection characteristics of extruded polyethylene coating combine to significantly improve the total performance of 3PE.Therefore,as buried pipelines external coating,3PE have the most competitive advantages than other type of external coatng.

3PE anti-corrosion is the most commonly used method of anti-corrosion,in addition to 2PE,2PP,3PP,their manufacturing process is similar to but different raw materials, this anti-corrosion characteristics of the simple fabrication process,the preservative effect,inexpensive pipe manufacturing industry generally agree that corrosion.

The 3PE coated steel pipe is with 3 layer coatings:

1.Epoxy primer coating.The first layer with epoxy powder (FBE> 100um).Directly coated at the pipe surface.Ensure the overall coating has good adhesion at higher temperatures.

2.Copolymer adhesive.Mian componenet for this layer is polyolefin.The thickness of the adhesive is ranges from 170um to 250um.To make sure the top anti-corrosion coating is adhesived at the primer coating and also the pipe surface.

3.Anti-corrosion Coating (PE layer).The top layer is extruded polyethylene,the thickness of this layer is from 2.5 mm to 3.7 mm.It is polyethylene which have advantages to anti-water,electrical resistance and anti mechanical damage.It is very important layer.

Therefore,3PE coating steel pipe integrated with the advantages of FBE and the PE.Which more and more widely used in buried pipeline's transporting of water,gas and oil.

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